deep groove ball bearing 1.high precision 2.low noise 3.low libration 4.long service life deep groove ball bearingWe can provide competitive price with good quality ... designs that permit relatively high-speed operation. 60series:606,607,608,,6000,6001,6002,6003,6004,6005,6006,6007,6008,6009 ... Without Snap Ring Groove;4. Precision Grade: P0, P6, P5, P4;5. Clearance Grsde: C2, C0, C3, C4, C5;6. ...